Fractal structure silver particle-based flexible and stretchable conductor and preparation method thereof

A fractal structure, silver particle technology, applied in conductive materials dispersed in non-conductive inorganic materials, metal/alloy conductors, conductive layers on insulating carriers, etc., to achieve basic morphology, good repeatability, flexibility and flexibility. Effects of Stretching the Demand for Electronic Devices

Active Publication Date: 2018-07-17
WUHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This structure means that there are many contact points between the f

Method used

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Embodiment 1

[0021] The invention relates to a method for preparing a flexible and stretchable conductor based on fractal structured silver particles. Specifically as follows: 1) synthetic hierarchical structure silver particle, concrete method is: choose a certain amount of silver nitrate (≥99.8%) and 50% hydroxylamine aqueous solution to be dissolved in deionized water respectively and make 0.06M silver nitrate solution and 0.24M hydroxylamine solution ( The molar concentration ratio is 1:4), under the magnetic stirring condition of 500rpm, the silver nitrate solution and the hydroxylamine solution are simultaneously mixed with 4mL min -1 The speed was added dropwise into a three-neck flask for mixing to obtain silver particles with hierarchical structure. The whole process is carried out at room temperature. 2) Purify the synthesized silver microparticles with hierarchical structure. The specific method is: respectively use deionized water and absolute ethanol to clean the silver micro...

Embodiment 2

[0024] The invention relates to a method for preparing a flexible and stretchable conductor based on fractal structured silver particles. Specifically as follows: 1) synthetic hierarchical structure silver particle, concrete method is: choose a certain amount of silver nitrate (≥99.8%) and 50% hydroxylamine aqueous solution to be dissolved in deionized water respectively and make 0.06M silver nitrate solution and 0.24M hydroxylamine solution ( The molar concentration ratio is 1:4), under the magnetic stirring condition of 500rpm, the silver nitrate solution and the hydroxylamine solution are simultaneously mixed with 4mL min -1 The speed was added dropwise into a three-neck flask for mixing to obtain silver particles with hierarchical structure. The whole process is carried out at room temperature. 2) Purify the synthesized silver microparticles with hierarchical structure. The specific method is: respectively use deionized water and absolute ethanol to clean the silver micro...

Embodiment 3

[0027] The invention relates to a method for preparing a flexible and stretchable conductor based on fractal structured silver particles. Specifically as follows: 1) Synthesis of silver particles with hierarchical structure, the specific method is: select a certain amount of silver nitrate (≥99.8%) and 50% aqueous solution of hydroxylamine to be dissolved in 50mL of deionized water respectively to make 0.06M silver nitrate solution and 0.24M hydroxylamine Solution (the molar concentration ratio is 1:4), under the magnetic stirring condition of 500rpm, the silver nitrate solution and the hydroxylamine solution are simultaneously mixed with 4mL min -1 The speed was added dropwise into a three-neck flask for mixing to obtain silver particles with hierarchical structure. The whole process is carried out at room temperature. 2) Purify the synthesized silver microparticles with hierarchical structure. The specific method is: respectively use deionized water and absolute ethanol to ...

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Abstract

The invention relates to a preparation method of a fractal structure silver particle-based flexible and stretchable conductor. The preparation method is characterized in that the stretchable conductoris prepared from fractal structure silver particles as a conductive filler. The fractal structure silver particles have a special three-dimensional structure, so that interconnection is facilitated to form a conductive network; and the fractal structure silver particles are embedded into a polydimethylsiloxane (PDMS) surface, so that the stretchable conductor with excellent performance can be prepared. The method is simple in synthesis process of the fractal structure silver particles and has good repeatability. The flexible and stretchable conductor is prepared from the fractal structure silver particles as the conductive filler, and research on the stretchable conductor is expanded. The obtained conductor has the characteristics that the preparation process is relatively simple, the energy consumption is relatively low and the stability of the conductivity under a mechanical deformation condition is good; the conductor can be applied to industrial batch preparation and can be applied to flexible and stretchable electronic equipment; and the synthesis method is clean, environment-friendly and suitable for promotion and application.

Description

technical field [0001] The invention relates to a flexible and stretchable conductor based on fractal structured silver particles and a preparation method thereof. Background technique [0002] Electronic devices have become a necessity in people's daily life, and the appearance of flexible and stretchable functions further promotes people's life, which is one of the future trends of electronic devices. Flexible and stretchable electronic devices have been studied and gained much attention because conventional electronic devices are prone to failure under deformation conditions. As an important component of stretchable electronic devices, flexible and stretchable conductors are widely used in electronic devices such as flexible light-emitting devices, electronic sensors, flexible batteries, and electronic skins. Stretchable conductors are mainly composed of conductive fillers and elastic polymers, where the conductive fillers provide electrical conductivity and the elastome...

Claims

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Application Information

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IPC IPC(8): H01B1/02H01B5/14H01B1/22
CPCH01B1/02H01B1/22H01B5/14
Inventor 吴伟李永威
Owner WUHAN UNIV
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